An industrial partner is working regularly with Ecore metamodels, and for technical reasons they prefer having the .ecore file under version control rather than the Emfatic .emf file, but they would still like to compare metamodel versions through the more readable Emfatic syntax rather than the XMI sources of the .ecore file.

We tried creating a textconv filter for Git that turns .ecore files into Emfatic for differencing in this project. It works fine for differencing from the terminal or from VS Code, but the Git integration in Eclipse does not support textconv filters. Instead, we would need to provide a custom comparison view for Eclipse's Compare UI (similar to the existing raw text + Ecore differencing views).

It'd be nice to add a plugin to this project which provided this functionality, which could be optionally installed as a new feature.

/There should be a clean way to generate all codes ( model, edit, test , diagram etc )
using emfactic file referred in an ant script ( in headless mode ).

Right now even after manually adding all dependencies. Running the ant script

For example,

java -jar C:\eclipse\plugins\org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar -application org.eclipse.ant.core.antRunner -buildfile C:\epsilon\workspace\is\model\build.xml

Produces,

BUILD FAILED
C:\epsilon\workspace\is\model\build.xml:17: java.lang.IllegalStateException: Wor
kbench has not been created yet.
at org.eclipse.ui.PlatformUI.getWorkbench(PlatformUI.java:93)
at org.eclipse.epsilon.workflow.tasks.eugenia.EugeniaTask.executeImpl(Eu
geniaTask.java:139)
at org.eclipse.epsilon.workflow.tasks.EpsilonTask.execute(EpsilonTask.ja
va:40)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:392)
at org.apache.tools.ant.Target.performTasks(Target.java:413)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExe
cutor.java:41)
at org.eclipse.ant.internal.core.ant.EclipseDefaultExecutor.executeTarge
ts(EclipseDefaultExecutor.java:32)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.eclipse.ant.internal.core.ant.InternalAntRunner.run(InternalAntRu
nner.java:672)
at org.eclipse.ant.internal.core.ant.InternalAntRunner.run(InternalAntRu
nner.java:537)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.ant.core.AntRunner.run(AntRunner.java:513)
at org.eclipse.ant.core.AntRunner.start(AntRunner.java:600)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandl
e.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runAppli
cation(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Ec
lipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)

Total time: 1 second
An error has occurred. See the log file
C:\Users\shrikanth_n_c\workspace.metadata.log.

log.log

My guess epsilon.eugenia task is tightly coupled with eclipse dependencies ( IFile, Workspace, workbench etc)

Thanks,
Shrikanth NC

Jörn Guy Süß CLA 2022-12-14 00:48:24 EST
The grammar of Emfatic defines an EEnumliteral like this:

sequence enumLiteral : leadingAnnotations=annotations name=ID (EQUALS val=INT_LITERAL)? trailingAnnotations=annotations SEMI ;

But Ecore defines it like this:
https://download.eclipse.org/modeling/emf/emf/javadoc/2.9.0/org/eclipse/emf/ecore/EEnumLiteral.html

with an extra attribute literal, defined as

This is the literal, string value that represents this enumerator value. This is used in persisting instances of enumerated type. If set to null, it will return the name, instead.

Checking the source code of Emfatic, there is no call to the setLiteral() method anywhere. This, together with the grammar, seems to indicate that Emfatic does not offer this feature.

Could this please be added?